Adam has 40 blue stickers and 60 green stickers.
After giving away the same number of stickers,
the ratio of the blue stickers and the green stickers becomes 1 : 6.
How many stickers are given away?
|
Blue |
Green |
Difference |
Before |
40 |
60 |
20 |
Change |
- ? |
- ? |
|
After |
1 u |
6 u |
5 u |
At first
Difference in the number of stickers
= 60 - 40
= 20
In the end
Difference in the number of stickers in units
= 6 u - 1 u
= 5 u
The difference in the number of stickers between the blue stickers and the green stickers remains unchanged.
5 u = 20
1 u = 20 ÷ 5 = 4
Number of blue stickers that Adam gives away
= 40 - 4
= 36
Total number of stickers that Adam gives away
= 2 x 36
= 72
Answer(s): 72